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Published byHortense Reynolds Modified over 8 years ago
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4,4’- Methylenedianiline (MDA)
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Regulated areas v Entrances and accessways are posted with signs with the following legend: 1a
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Regulated areas v Only authorized persons may enter regulated areas v Tour regulated areas v Inform contract employers of regulated areas 1b
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Definitions v Action level v Permissible exposure limit (PEL) v Short-Term Exposure Limit (STEL) 1c
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Definitions v Engineering controls v Work practices v Visual monitoring v Air monitoring 1d
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Monitoring v Ongoing monitoring: Contaminants at or above the action level, but below PEL (at least every 6 months)Contaminants at or above the action level, but below PEL (at least every 6 months) Contaminants at or above the PEL (at least every 3 months)Contaminants at or above the PEL (at least every 3 months) Changes in personnel, processes, controlsChanges in personnel, processes, controls 1e
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Monitoring v Monitoring may be stopped under some conditions v Employees have a right to be notified of monitoring results within 15 working days 1f
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Monitoring v Company must develop and implement a written compliance plan to reduce exposure 1g
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Material safety data sheets (MSDSs) v Hazard communication program v Location of MSDSs 2a
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v Labels on containers v Manufacturing/ importing MDA Material safety data sheets (MSDSs) 2b
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Material safety data sheets (MSDSs) v Labels for containers of MDA 2c
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Material safety data sheets (MSDSs) v Labels for mixtures of MDA 2d
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Potential health hazards v Immediate (acute) health effects FeverFever ChillsChills Loss of appetiteLoss of appetite VomitingVomiting 3a Jaundice Dermatitis Anorexia Dark urine
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Potential health hazards v Long-term (chronic effects) v Carcinogenic v Mutagenic v Liver, kidney, blood, or spleen problems 3b
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Limiting employee exposure v Prohibit skin contact v Odor is not a reliable detection v Leak and spill detection 4a
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Limiting employee exposure v Employee rotation is not an acceptable method of compliance v Wear PPE v Avoid strong acids, anhydrides, oxidizers 4b
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Limiting employee exposure v In regulated areas, do not: Eat or drinkEat or drink Smoke or chew gum or tobaccoSmoke or chew gum or tobacco Apply cosmeticsApply cosmetics v Keep surfaces clean of accumulated MDA 4c
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Handling spills, emergencies, clean-up v Conduct a program to detect leaks and spills v Conduct regular visual inspections 5a
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Handling spills, emergencies, clean-up v Sweep material onto paper and place in fiber carton v Package appropriately for incineration v Know procedures for waste disposal 5b
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Handling spills, emergencies, clean-up v Dispose of waste containing MDA in a proper manner v Repair leaks quickly 5c
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Engineering and work practice controls v Primary methods of exposure control v Ventilation is the most common engineering control method v Understand ventilation system operation 6a
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Emergency procedures v Specific employee duties/assignments v Procedures to be followed in an emergency v Specific training 7a
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Emergency procedures v Access to emergency equipment v Proper use of equipment v Leave area quickly in an emergency 7b
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Emergency procedures v Use water spray to reduce vapors v Prohibit flames and smoking in hazard area 7c
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Emergency procedures v Fire response Each employee must know procedures/responsibilitiesEach employee must know procedures/responsibilities Use water, dry chemical, carbon dioxide extinguishing agentsUse water, dry chemical, carbon dioxide extinguishing agents 7d
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Emergency procedures v First aid measures Get immediate medical attentionGet immediate medical attention Remove victim from exposure areaRemove victim from exposure area Remove contaminated clothingRemove contaminated clothing Do not induce vomitingDo not induce vomiting Wash eyes or skin with large amounts of waterWash eyes or skin with large amounts of water 7e
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Emergency procedures v Medical examinations will be made available to exposed employees 7f
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Medical surveillance v Required for all employees: Exposed at or above the action level for 30 or more days/yearExposed at or above the action level for 30 or more days/year Subject to dermal exposure for 15 or more days/yearSubject to dermal exposure for 15 or more days/year Exposed during an emergencyExposed during an emergency Determined to have been exposed from air monitoring resultsDetermined to have been exposed from air monitoring results Showing signs of exposureShowing signs of exposure 8a
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Medical surveillance v Exposure thresholds are determined without respirator use 8b
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Medical surveillance v Examinations will be: Prior to assignment to an area where there may be an exposurePrior to assignment to an area where there may be an exposure At least annually where there may be an exposureAt least annually where there may be an exposure Whenever an employee shows signs and symptoms of toxic levels of exposureWhenever an employee shows signs and symptoms of toxic levels of exposure 8c
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Medical surveillance v Records are retained for the duration of employment plus 30 years v Examinations will cover: Skin and liver functionSkin and liver function New exposure to liver toxinsNew exposure to liver toxins Any other tests deemed necessaryAny other tests deemed necessary Test resultsTest results 8d
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Medical surveillance v Physician will provide written opinion, which includes: Physician’s opinionPhysician’s opinion Recommended limitationsRecommended limitations Statement of consultation with physicianStatement of consultation with physician v Employees receive written opinion within 15 working days 8e
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Medical removal program v Conditions for medical removal from jobs 29 CFR 1910.1050(m)(9)29 CFR 1910.1050(m)(9) v Removal may be temporary or permanent v Policies regarding medical removal 9a
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Personal protective equipment v Purpose v Proper use v Limitations 10a
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Personal protective equipment v Respirators are required: During the period necessary to install or put into effect engineering or work practice controlsDuring the period necessary to install or put into effect engineering or work practice controls In operations where engineering controls or work practices are not feasibleIn operations where engineering controls or work practices are not feasible 10b
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Personal protective equipment v Respirators are required: In operations where engineering controls or work practices do not reduce the PEL to acceptable levelsIn operations where engineering controls or work practices do not reduce the PEL to acceptable levels In emergenciesIn emergencies 10c
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Personal protective equipment v Impermeable clothing, gloves, goggles, face shields may be required v PPE selection, use, inspection, cleaning/disposal 10d
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Personal protective equipment v Changing rooms v Storage of clothing v Removing/storing contaminated clothing 10e
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Personal protective equipment v Workers with potential of airborne exposure must: Wash face and hands before eating, drinking smoking, applying cosmeticsWash face and hands before eating, drinking smoking, applying cosmetics Shower at the end of every work shiftShower at the end of every work shift 10f
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Personal protective equipment v Never take contaminated clothing home v Only trained workers may remove contaminated material from storage areas 10g
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Copy of regulation available v Location 11a
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